X-Git-Url: http://ncurses.scripts.mit.edu/?a=blobdiff_plain;ds=sidebyside;f=aclocal.m4;h=22627d4492c9ebe299eb0c95a5a1f3578664bd8d;hb=4298026c68384077462178f8018c8c1add0c3cdf;hp=806dec1c92ec52213e5e298d9f5361d8a313adbc;hpb=76a479337308b4b5e749fa8c38b7b7f482998c5b;p=ncurses.git

diff --git a/aclocal.m4 b/aclocal.m4
index 806dec1c..22627d44 100644
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -28,7 +28,7 @@ dnl***************************************************************************
 dnl
 dnl Author: Thomas E. Dickey 1995-on
 dnl
-dnl $Id: aclocal.m4,v 1.790 2016/05/29 00:35:34 tom Exp $
+dnl $Id: aclocal.m4,v 1.792 2016/08/06 23:41:12 tom Exp $
 dnl Macros used in NCURSES auto-configuration script.
 dnl
 dnl These macros are maintained separately from NCURSES.  The copyright on
@@ -711,12 +711,15 @@ AC_SUBST(BUILD_EXEEXT)
 AC_SUBST(BUILD_OBJEXT)
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_CC_ENV_FLAGS version: 3 updated: 2016/05/21 18:10:17
+dnl CF_CC_ENV_FLAGS version: 4 updated: 2016/06/25 16:23:40
 dnl ---------------
 dnl Check for user's environment-breakage by stuffing CFLAGS/CPPFLAGS content
 dnl into CC.  This will not help with broken scripts that wrap the compiler with
 dnl options, but eliminates a more common category of user confusion.
 dnl
+dnl In particular, it addresses the problem of being able to run the C
+dnl preprocessor in a consistent manner.
+dnl
 dnl Caveat: this also disallows blanks in the pathname for the compiler, but
 dnl the nuisance of having inconsistent settings for compiler and preprocessor
 dnl outweighs that limitation.
@@ -732,7 +735,7 @@ case "$CC" in
 	AC_MSG_WARN(your environment misuses the CC variable to hold CFLAGS/CPPFLAGS options)
 	# humor him...
 	cf_flags=`echo "$CC" | sed -e 's/^[[^ 	]]*[[ 	]][[ 	]]*//'`
-	CC=`echo "$CC" | sed -e 's/[[ 	]].*//'`
+	CC=`echo "$CC " | sed -e 's/[[ 	]]-[[IUD]][[^ 	]][[^ 	]]*//g' -e 's/[[ 	]]*$//'`
 	CF_ADD_CFLAGS($cf_flags)
 	CF_VERBOSE(resulting CC: '$CC')
 	CF_VERBOSE(resulting CFLAGS: '$CFLAGS')
@@ -2650,7 +2653,7 @@ case $cf_gnat_version in
 esac
 ])
 dnl ---------------------------------------------------------------------------
-dnl CF_GNU_SOURCE version: 6 updated: 2005/07/09 13:23:07
+dnl CF_GNU_SOURCE version: 7 updated: 2016/08/05 05:15:37
 dnl -------------
 dnl Check if we must define _GNU_SOURCE to get a reasonable value for
 dnl _XOPEN_SOURCE, upon which many POSIX definitions depend.  This is a defect
@@ -2677,7 +2680,20 @@ make an error
 	CPPFLAGS="$cf_save"
 	])
 ])
-test "$cf_cv_gnu_source" = yes && CPPFLAGS="$CPPFLAGS -D_GNU_SOURCE"
+
+if test "$cf_cv_gnu_source" = yes
+then
+AC_CACHE_CHECK(if we should also define _DEFAULT_SOURCE,cf_cv_default_source,[
+CPPFLAGS="$CPPFLAGS -D_GNU_SOURCE"
+	AC_TRY_COMPILE([#include <sys/types.h>],[
+#ifdef _DEFAULT_SOURCE
+make an error
+#endif],
+		[cf_cv_default_source=no],
+		[cf_cv_default_source=yes])
+	])
+test "$cf_cv_default_source" = yes && CPPFLAGS="$CPPFLAGS -D_DEFAULT_SOURCE"
+fi
 ])dnl
 dnl ---------------------------------------------------------------------------
 dnl CF_GPP_LIBRARY version: 12 updated: 2015/04/17 21:13:04